Roof or wall tile



Oct. 2, 1962 Filed Dec. 17, 1959 J. w. HOSBEIN ETAL 3,056,362

ROOF OR WALL TILE 4 Sheets-Sheet l INVENTORS JOHN W. Hosaam y IZAY'MONDMBARRE TTOPNEYS Oct. 2,

Filed Dec. 17. 1959 J. W. HOSBEIN ET AL ROOF OR WALL TILE 4 Sheets-Sheet2 INVENTORS JOHN W. Hosaem y RAY 0ND M. BARR wi a ymz W 9100M ATTORNEYS1952 J. w. HOSBEIN ET AL 3,

ROOF OR WALL TILE 4 Sheets-Sheet 3 Filed Dec. 17, 1959 f 'iZfl/ 4e 44 5942 INVENTORS JOHN W. l-losaem BY R AYMONp M. BARRE 9 ATTORNEYS 1962 J.w. HOSBEIN ET AL 3,056,362

ROOF OR WALL TILE Filed Dec. 17, 1959 4 Sheets-Sheet 4 'INVENTORS JOHNW. Hosea N BY RAYMOND M. BARRE yam 9 A TTOIZN EYS 3,056,352 PatentedOct. 2, 1962 fear! 3,656,362 R0015 R WALL TILE John W. Hoshein,Deerfield, Ill, and Raymond M. Barre, Paris, France, assignors to M. H.Detriclr Company, Chicago, llh, a corporation of Delaware Filed Dec. 17,1959, Ser. No. $60,144 111 Claims. (Cl. 110-99) Our invention relates torefractory tiles, and more particularly to a refractory roof or walltile that is of greater width than thickness to provide a pair of wideside faces and a pair of narrow side faces thereon.

It is the principal purpose of our invention to improve interlockingwall or roof tiles so as to reduce the likelihood of spalling thereofand to reduce air leakage into the furnace wall or roof and gas leakagefrom the furnace through said wall or roof.

it is a further purpose of our invention to provide a roof or wall tileof the above referred to character, that has an offset joint between thenarrow side faces of the tiles to thus provide for broken joints betweenthe. tiles in the direction of the length of a row thereof.

More specifically our invention comprises a refractory tile that has aribbed and grooved portion having alternating ribs and grooves thatextend transversely across the wide side faces of the tiles, with theribs on one wide side face opposite the grooves in the other wide sideface so that ribs and grooves will interfit or intermesh, and in whicheach of the ribs and grooves have portions out of longitudinal alignmentwith each other so as to reduce the possibility of spelling of the tileson transverse lines, which would be horizontal lines in a roof tile andvertical lines in a wall tile.

Further, in order to reduce the seepage of gas from the furnace throughthe roof or wall, or the entrance of air into the furnace through theroof or wall, said ribs and grooves are continuous along said wide sidefaces of said tile, each rib or groove comprising parallel portions thatare out of longitudinal alignment and a pair of oppositely inclinedportions connecting said out of alignment parallel portions.

In order to additionally provide for a better seal between the adjacentwall or roof forming tiles, the wide side faces of said tiles areprovided with planar portions that are adapted to lie in face to faceengagement in the wall or roof and the narrow side faces are providedwith planar portions and ribbed and grooved portions, the planarportions being on the outer end faces of said tiles and the ribbed andgrooved portions being on the inner ends thereof. By providing a recessfor receiving a hanger bracket in only one of said narrow side faces, acontinuous face to face engagement is provided between the narrow sidefaces of said wall or roof tiles that are opposite the recessed faces,thus providing a better seal than where such recesses are provided inboth narrow side faces of the wall or roof forming tiles.

In order to provide a better seal between the adjacent tiles lengthwiseof the row and to hold the same in better alignment each of said narrowside faces is offset midway across the same to provide a protrudingportion and a receding portion, the protruding portion of each of thenarrow side faces being opposite the receding portion of the othernarrow side face, with the grooves in the receding portion of eachnarrow side face in alignment with the ribs on the protruding portion ofsaid narrow side face. Thus the roof or wall forming refractories can bemounted on refractory hanger members, in rows that extend lengthwise ofthe hanger members in pairs facing oppositely, that is, with the hangerreceiving recesses on the right and left sides of said roof or wallforming tiles, and all of the ribs and grooves in the wide side faces ofsaid tiles will interfit. Similarly, the grooves and ribs in theprotruding and receding narrow side faces of the tiles will interfit inthe rows that extend transversely of the length of the refractory hangermembers.

Instead of providing a hanger bracket receiving recess in only one ofthe narrow side faces of the tile, such hanger bracket recesses can beprovided in both narrow sides of said tiles if this is desired. Whensuch recesses are provided in both narrow sides of the tiles there is nonecessity of turning the adjacent tiles through as is necessary toproperly assemble the tiles relative to each other in the form of theinvention utilizing only the single recess for the reception of thehanger bracket.

In view of the fact that this reversal of the position of the tiles in arow is not necessary in this last mentioned form of the invention, it ispossible to provide for an arrangement of the alternating ribs andgrooves in the narrow side faces of the tiles whereby the ribs continueentirely across said narrow side faces and the grooves extend similarlyentirely thereacross. Thus there will be a rib on the projecting portionof each narrow side face in horizontal alignment with a rib on thereceding face at said narrow side and a groove in horizontal alignmentwith a groove on the other narrow side opposite said ribs. There is anadvantage in this, in that the seal between the grooved and ribbedportions is more perfect if the grooves and ribs continue entirelyacross the narrow side faces than if a rib is horizontally opposite agroove, as in the form of the invention in which a single hangerreceiving recess is provided in each tile.

Other objects and advantages of our invention will appear as thedescription of the drawings proceeds. We desire to have it understood,however, that we do not intend to limit ourselves to the particulardetails shown or described, except as defined in the claims.

In the drawings:

FIG. 1 is a vertical sectional view through a fragmentary portion of afurnace roof, showing our improved roof or wall forming tiles mounted inposition therein.

FIG. 2 is an elevation on an enlarged scale of one of said tiles asviewed from the recessed side thereof.

FIG. 3 is a side elevational view of the tile shown in FIG. 2 as viewedfrom the right of FIG. 2.

FIG. 4 is an elevation of the tile shown in FIG. 2 as viewed from thenarrow side thereof that is not recessed.

FIG. 5 is a side elevational view of the tile shown in FIG. 2 as viewedfrom opposite side thereof to FIG. 3.

FIG. 6 is a bottom plan view of a fragmentary portion of the wall shownin FIG. 1 on an enlarged scale.

FIG. 7 is an end view of one of the tiles shown in FIG. 6 as viewed fromthe inner or heat exposed end thereof.

FIG. 8 is a view in side elevation of a slightly modified form of tile,showing a hanger bracket in engagement therewith in dotted lines.

FIG. 9 is an elevation of the tile as viewed from the line 99 of FIG. 8.

FIG. 10 is a section taken on the line Iii-16 of FIG. 8.

FIG. 11 is a side elevation of the tile shown in FIG. 8 as viewed fromthe side thereof opposite that shown in FIG. 8.

FIG. 12 is an elevation taken on the line 12-12 of FIG. 8.

FIG. 13 is a bottom plan view of a fragmentary portion of a wallutilizing the tile shown in FIG. 8, and

FIG. 14 is an end view of one of the tiles shown in FIG. 13 as viewedfrom the inner or heat exposed end thereof.

Referring in retail to the drawings, in FIG. 1 is shown a furnace roofthat is mounted on a metallic frame- Work having frame members it) onwhich metal brackets 11 are mounted, from which the refractory hangermembers 12 extend, said refractory hanger members being hung from themetal brackets 11 and having heads 13 thereon that are received insockets or recesses 14 in the Wall or roof forming refractories 15. Thewall or roof forming refractories 15 are all alike and are assembled inalternating reversed positions in the Wall or roof. That is, eachrefractory member 15 of a row, such as that shown in FIG. 1, is reversed180 from the refractory member 15 adjacent thereto. Said refractory wallor roof forming members 15 are of a generally rectangular character,having flat inner and outer end faces 16 and 17 that extend parallel toeach other and wide and narrow side faces that extend perpendicularly tothe inner and outer end faces 16 and 17. The faces 16 and 17 arereferred to as inner and outer end faces because of the fact thatwhether the refractory members 15 are mounted in a roof or wall, saidfaces will be on the inner and outer sides of the wall, respectively. Inother words, the faces 16 will be the heat exposed faces of therefractory members 15.

One narrow side Wall of each of said refractory members 15 is providedwith the recess 14 and will be referred to hereinafter as the recessedside face of the wall or roof forming refractory tile. Said face has aplanar portion 18, which extends at an oblique angle toward the outerend face 17 from the recess 14, and a curved wall portion 19 connectssaid planar portion 18 with the walls of the recess 14. Toward the innerend of the said recessed side wall, from the recess 14, the said narrowside Wall is offset midway between the longitudinal edges thereof, saidoffset being indicated by the numeral 26. Thus a receding wall portion21 and a protruding Wall portion 22, that are flat faced or planar,

are provided on opposite sides of the ofiset 2i immedi- 1 ately adjacentthe recess 14, the protruding portion being on the left of the narrowside face as viewed in FIG. 2. Said side face is offset similarly fromsaid recess 14 to the inner end face 16 of said tile, but the portionlying inwardly beyond the planar faced portions 21 and 22 is alternatelyribbed and grooved, the ribs on the protruding portion being indicatedby the numeral 23 and the ribs on the receding portion being indicatedby the numeral 24, while the grooves in the protruding portion areindicated by the numeral 25 and the grooves in the receding portion areindicated by the numeral 26. All of the ribs 23 and 24 and all of thegrooves 25 and 25 are parallel to each other, and it will be noted thateach rib 23 has a groove 26 in transverse alignment therewith and thateach rib 24 has a transverse groove 25 in alignment therewith. Thebottoms of the grooves 25 and 26 and the crests of the ribs 23 and 24are connected by beveled wall portions 27.

Referring now to FIG. 4, the narrow side face of the tile opposite thatshown in FIG. 2, is shown therein. said side face may be referred to asthe planar or unrecessed face to distinguish from the recessed faceshown in FIG. 2. The said narrow side face has a planar portioncomprising a protruding portion 22' and a receding portion 21', whichlie on opposite sides of the offset and extend from the ribbed portionof the said end face to the outer side face 17 of the tile. When thetiles 15 are assembled in the roof or wall the recessed narrow sidefaces are directed toward each other. It will be noted that the socketor recessed portion 14 extends all the way across the tile and intersectboth the protruding face 22 and the receding face 23, the portion of thesocket in the receding face 21 being shallower than that in theprotruding face 22, as will be obvious from FIGS. 1 and 3.

The portion of the planar or unrecessed face of the tile that is nearestthe inner or heat exposed end 16 thereof is ribbed and grooved in thesame manner as the recessed face. The ribs on the protruding portion ofthe [l unrecessed face are indicated by the numeral 23 and the ribs onthe receding portion of said narrow side face are indicated by thenumeral 29, while the grooves in the protruding portion are indicated bythe numeral 34} and the grooves in the receding portion are indicated bythe numeral 31. The ribs and grooves have the same relationship in thisface of the tile as in the recessed face and are provided with theinclined or beveled connecting wall portions 27 previously described. Itwill be obvious that the planar or flat faced portions 21, 22 and 21 and22' lie midway between the crests of the ribs and the bottoms of thegrooves in the said portions of the narrow side faces on which they areprovided.

Referring to FIGS. 1 and 6, it will be noted that when the refractorywall or roof forming tiles 15 are assembled with the hanger members 12the socketed or recessed side faces of the wall or roof forming tileswill be toward each other, while those that do not have any sockets willbe toward each other, the arrangement of socketed and unsocketed endfaces facing each other alternating in the row shown in FIG. 1. With thewall forming tiles in this position, the ribs 23 on the projecting faceof one of the tiles 15 will be seated in the grooves 26 of the recedingportion of the tile opposite the same and the ribs 24 on said recedingportion will be seated in the grooves 25 of the projecting portion ofthe tile opposite the same.

At the opposite narrow side faces of the tiles, that do not have anysockets or recesses therein, the ribs 23 on the projecting portion ofone tile seat in the grooves 3i. of the receding portion of the othertile, while the ribs 29 of said receding portion seat in the grooves 3hof the projecting portion of the opposite tile. The flat or planar wallportion 22 on the projecting portion of one tile seats against theplanar or flat wall portion 21 on the receding portion of the othertile, while the offset portions 2 3' of the tiles are in engagement witheach other, thus providing a very effective seal at this joint.

The wide side faces of the tiles 15 have planar or fiat portionsextending from the outer ends 17 of the ti es, the one planar face beingindicated by the numeral 32 and the opposite planar face parallelthereto by the numeral 33. The inner ends of each of the wide side facesof the tiles are provided with ribbed and grooved portions, the ribs andgrooves alternating, and said ribs and grooves extend from the innerheat exposed ends 16 of said tiles to the plane faced portions 32 and33. When the tiles are arranged in the wall as shown in FIG. 1, theplane faces 32 and 33 alternate along the row, that is, each tile isreversed with respect to the adjacent one.

The ribs on the side face of the tile having the flat face 32 areindicated generally by the numeral 34- and the grooves alternatingtherewith generally by the numeral 35, while the ribs on the oppositefaces of the tiles are indicated by the numeral 36 and the groovesalternating therewith by the numeral 37.

Each of the ribs 34- has parallel end portions 38 and 39 that are inlongitudinal alignment with each other and a portion 40 that is parallelto the portions 38 and 39, but out of longitudinal alignment therewithor offset laterally from the portions 38 and 39. Connecting the portions38 and 39 of said ribs with the portion 4% are oppositely inclinedobliquely extending rib portions 41 and 42. Said ribs 34 are continuousfrom the end portion 38 thereof to the end portion 39 thereof and thusform a continuous undulating rib that may be referred to as of aherringbone shape. The grooves 35 have parallel end portions 43 and 44that lie between the portions 38 and 39 of the ribs and which are inlongitudinal alignment with each other and grooved portions 45 that areparallel with the grooved portions 43 and 44, but offset therefrom so asto be out of longitudinal alignment therewith. The grooved portions 43and 44 are connected with the grooved portions 45 by oppositely inclinedgrooved portions 46 and 47, said grooves 35 being continuous across theside face of the tile. Beveled wall portions 48 connect the crests ofthe ribs with the bottoms of the grooves.

The ribs 36 are of a similar character to the ribs 34 and the grooves 37are of a similar character to the grooves 35. Thus the ribs 3-6 havestraight end portions 49 and 50 that are in alignment with each otherand a portion 51 parallel thereto, that is offset from the portions 49and 58 and is connected therewith by means of the inclined rib portions52 and 53. The grooves 37 have straight end portions 54 and 55 that arein alignment with each other and portions 56 that are parallel theretobut offset therefrom, and said portions 56 are connected with theportions 54 and 55 by oppositely inclined groove portions 57 and 58.Beveled or inclined wall portions 48 connect the crests of the ribs withthe bottoms of the grooves.

Upon reference to FIGS. 3 and 5, it will be noted that when two of thetiles 15 are located in side by side relation with the socket portions14 thereof facing in the same direction the rib portions 51 of one tilewill be seated in the grooves 45 of an adjacet tile, the rib portions 52will be seated in the grooves 46 and the rib portions 53 will be seatedin the grooves 47, while the rib portions 50 will be seated in thegroove portions 44 and the rib portions 49 will be seated in the grooveportions 43. Similarly, the rib portions 40 will be seated in the grooveportions 56, the rib portions 42 will be seated in the groove portions58, the rib portions 41 in the groove portions 57, the rib portions 38in the groove portions 54 and the rib portions 39 in the groove portions55. Thus the ribbed and grooved portions of the adjacent tiles 15 in thedirection of the length of the hanger members 12 will have the ribs andgrooves so interfitting that the adjacent faces of the tiles willintermesh. Furthermore, due to the fact that such intermeshing existsand that the ribs and grooves are continuous, there are no openingsbetween the ends of ribs such as have existed in older constructions,through which some leakage of gas or air might have occurred. Inaddition to that, since the portions of the ribs and grooves that extendtransversely of the tiles, such as the portions 38, 39, 40, 43, 44 and45, do not extend in a straight line across the tiles, any weakenedportion that might cause horizontal spalling off of a layer of the tileis avoided. Furthermore, by providing the engag ing flat faces 21, 22,21 and 22', a tight seal is provided at the joints at which no hangermembers are used. This also greatly increases the air and gas tightnessof the wall or roof. Due to the projecting and receding narrow side wallportions an offset is provided in these cooperating walls, that furtheraids in providing a gas and air tight construction and aids in aligningthe rows of tiles, such as that shown in FIG. 1.

In FIGS. 8 to 13 inclusive, a modified form of tile is shown which canbe mounted on a framework in the same manner as that shown in FIG. 1 bymeans of refractory hanger members 12 having heads 13 thereon that arereceived in sockets or recesses 14 in both narrow side walls of the wallor roof forming refractories 15. The wall or roof forming refractoriesare all alike and are all assembled in the same position in the wall orroof, that is, no reversal thereof, such as in the form of the inventionshown in FIGS. 1 to 7, is necessary. The wall or roof forming members 15are of a generally rectangular character having flat inner and outerfaces 16 and 17, that extend parallel to each other, and wide and narrowside faces that extend perpendicularly to the inner and outer end faces16 and 17.

Each of the narrow side faces of each of said refractory members 15 isprovided with a planar portion 18, which extends at an oblique angletoward the outer end face 17 from the recesses 14, and a curved wallportion 19 that connects said planar portion 18 with the wall of therecess 14. Toward the inner narrow side of said end wall from the recess14 each wall is offset midway between the longitudinal edges thereof,said offset being indicated by the numeral 59 and extending at anoblique angle to the receding wall portion 21 and the protruding wallportion 22 of each of said narrow side faces, the protruding portionbeing on the left of the narrow side faces as viewed in FIGS. 9 and 12.Said narrow side faces are offset similarly from the recesses 14 to theinner end face of the tile, but the portion of each narrow side facelying inwardly toward the planar faced portions 21 and 22 is alternatelyribbed and grooved. The ribs on the protruding portions are indicated bythe numeral 23 and the ribs on the receding portions by the numeral 24',while the grooves on the protruding portions are indicated by thenumeral 25 and the grooves on the receding portions by the numeral 26.

It will be noted upon reference to FIGS. 8, 10 and 11 that the grOOves25 are opposite the ribs 24 and that the grooves 26 are opposite theribs 23, and upon reference to FIGS. 9 and 12, that the ribs 23' and 24and the grooves 25' and 26' are horizontally aligned in the two portionsof the narrow side faces. The bottoms of the grooves 25 and 26 and thecrests of the ribs 23 and 24 are connected by beveled wall portions 27.It will further be noted that when the tiles are assembled as shown inFIG. 13 the rib portions 23' and 24' of one tile will Seat in the grooveportions 26 and 25' of the next adjacent tile in the row. Also it willbe noted that the ribs 23' and 24 are connected by means of rib portions6'0 extending across the obliquely extending wall of the offset 59 andthat grooves 61 alternate with the ribs 60 in said inclined wallportion. Thus there is an interfitting rib and groove connectionprovided between the narrow side faces of adjacent tiles longitudinallyof the row throughout said ribbed and grooved portions thereof includingthe offset portions.

Each of the ribs thus is continuous across the narrow side face on whichit is provided, each rib being made up of a portion 23', 60 and 24,while each groove is made up of a portion 25, av portion 61 and aportion 26. The grooves 68 and 61 are provided with beveled connectingwall portions 27 in the same manner as the ribs 23' and the grooves 25and ribs 24' and grooves 26.

The wide side faces of the tiles 15' have planar or fiat portionsextending from the outer ends 17 of the tiles, these being indicated bythe numerals 32 and 33, as in the form shown in FIGS. 1 to 7 inclusive.The inner ends of each of the wide side faces of the tiles are providedwith ribbed and grooved portions, the ribs and grooves alternating andextending from the inner heat exposed ends 16 of the tiles to the planefaced portions 32 and 33. The ribs on the wide side faces of the tilesare indicated generally by the same numerals as in the form of theinvention shown in FIGS. 1 to 7, and since said grooves and ribs aresimilarly related and of substantially the same character as the ribsand grooves shown in FIGS. 1 to 7, the same reference numerals areapplied to the parallel end portions, the mid-portions and the inclinedportions connecting them, as in the forms shown in FIGS. 1 to 7inclusive.

When two of the tiles 15 are located in side by side relation, the sameare so arranged that the ribs on one wide side of the tiles will fit inthe grooves of the wide side of the tile adjacent thereto in the samemanner as the ribs and grooves in the wide side faces of the tiles 15interfit. Accordingly the joints between the wide sides of the tiles 15are of the same character as the joints between the wide sides of thetiles 15 and the only variation between the form of the invention shownin FIGS. 8 to 13 from that shown in FIGS. 1 to 7 inclusive, is in thenarrow side portions of the tiles.

What we claim is:

1. A refractory tile having inner and outer ends parallel wide sidefaces each having a planar portion and a ribbed and grooved portionhaving alternating ribs and grooves extending continuously transverselyacross said side faces, each of said ribs and grooves having portionsout of longitudinal alignment with each other and said tiles havingnarrow-side faces extending perpendicularly to said wide side faces andeach offset midway across the same to provide a protruding portion and areceding portion, the protruding portion of each of said narrow facesbeing opposite the receding portion of the other narrow face, each ofsaid portions of said narrow faces having a planar portion and a groovedand ribbed portion, one of said narrow faces having an attaching recesstherein and the other narrow face having flat sealing faces extendingcontinuously from said ribbed and grooved portions to the outer end ofsaid tile.

2. A refractory tile having inner and outer ends parallel wide sidefaces each having a planar portion and a ribbed and grooved portionhaving alternating ribs and grooves extending continuously transverselyacross said side faces in parallelism, each of said ribs and grooveshaving portions out of longitudinal alignment with each other, the ribson one of said side faces being opposite the grooves on the side faceopposite thereto, and said tile having narrow side faces extendingperpendicularly to said Wide side faces and each offset midway acrossthe same to provide a protruding portion and a receding portion, theprotruding portion of each of said narrow faces being opposite thereceding portion of the other narrow face, each of said portions of saidnarrow faces having a planar portion and a grooved and ribbed portion,one of said narrow faces having an attaching recess therein and theother narrow face having flat sealing faces extending continuously fromsaid ribbed and grooved portions to the outer end of said tile, the ribsand grooves extending transversely of said protruding and recedingportions and the grooves in said receding portions aligning transverselyof said narrow faces with the ribs on the protruding portions adjacentthereto.

3. A refractory tile having inner and outer ends parallel wide sidefaces each having a planar outer portion and a ribbed and grooved innerportion having alternating ribs and grooves extending transverselyacross said side faces, each of said ribs and grooves having portionsout of longitudinal alignment with each other and said tiles havingnarrow side faces extending perpendicularly to said wide side faces andeach offset midway across the same to provide a protruding narrow sideface portion and a receding narrow side face portion, the protrudingportion of each of said narrow faces being opposite the receding portionof the other narrow face, each of said portions of said narrow faceshaving a planar portion and a grooved and ribbed portion, said planarportions being located outwardly from said grooved and ribbed portion,one of said narrow faces having an attaching recess in the planarportion thereof extending across both said receding and protrudingportion thereof, and the other narrow face having flat sealing facesextending continuously from said ribbed and grooved portions to theouter end of said tile.

4. A refractory tile having parallel wide side faces each having aplanar portion and a ribbed and grooved portion having alternating ribsand grooves extending continuously transversely across said side facesin parallelism, each of said ribs and grooves having parallel portionsout of alignment wtih each other and inclined portions connecting saidparallel portions and said tile having narrow side faces extendingperpendicularly to said wide side faces and each offset midway acrossthe same to provide a protruding portion and a receding portion, theprotruding portion of each of said narrow faces being opposite thereceding portion of the other narrow face, each of said portions of saidnarrow faces having a planar portion and a grooved and ribbed portion,one of said narrow faces having an attaching recess therein.

5. A refractory tile having parallel wide side faces each having aplanar portion and a ribbed and grooved portion having alternating ribsand grooves extending continuously transversely across said side facesin parallelism, each of said ribs and grooves having parallel portionsout of longitudinal alignment with each other and oppositely inclinedportions connecting said parallel portions and said tile having narrowside faces extending perpendicularly to said wide side faces and eachoffset midway across the same to provide a protruding portion and areceding portion, the protruding portion of each of said narrow facesbeing opposite the receding portion of the other narrow face, each ofsaid portions of said narrow faces having a planar portion and a groovedand ribbed portion, one of said narrow faces having an attaching recesstherein.

6. A refractory tile having inner and outer ends parallel wide sidefaces each having a planar portion and a ribbed and grooved portionhaving alternating ribs and grooves extending transversely across saidside faces, each of said ribs and grooves having portions out oflongitudinal alignment with each other and said tile having narrow sidefaces extending prependicularly to said wide side faces and each offsetmidway across the same to provide a protruding narrow side face portionand a receding narrow side face portion, the protruding portion of eachof said end faces being opposite the receding portion of the othernarrow face, each of said portions of said narrow faces having a planarportion and a grooved and ribbed portion, one of said narrow faceshaving an attaching recess therein and the other narrow face havingoffset flat sealing faces extending continuously from said ribbed andgrooved portions to the outer end of said tile, said narrow faceprovided with said attaching recess having a fiat faced portionextending from said recess to the outer end of said tile at an obliqueangle to said protruding and receding portions of said narrow faces.

7. A refractory tile having parallel wide side faces each having aplanar portion and a ribbed and grooved portion having alternating ribsand grooves extending transversely across said side faces, each of saidribs and grooves having portions out of longitudinal alignment with eachother and said tile having narrow side faces extending perpendicularlyto said Wide side faces and each offset midway across the same toprovide a protruding narrow side face portion and a receding narrow sideface portion, the protruding portion of each of said narrow faces beingopposite the receding portion of the other narrow face, each of saidportions of said narrow faces having a planar portion and a grooved andribbed portion, said tile being provided with means for attachin thesame to a hanger tile.

8. A refractory tile having parallel wide side faces each having aplanar portion and a ribbed and grooved portion having alternating ribsand grooves extending continuously transversely across said side facesin par allelism, each of said ribs and grooves having parallel portionsout of longitudinal alignment with each other and oppositely inclinedportions connecting said parallel portions and said tile having narrowside faces extending perpendicularly to said wide side faces and eachoffset midway across the same to provide a protruding portion and areceding portion, the protruding portion of each of said narrow facesbeing opposite the receding portion of the other narrow face, each ofsaid portions of said narrow faces having a planar portion and a groovedand ribbed portion, said tile being provided with means for attachingthe same to a hanger tile.

9. A refractory tile having inner and outer ends parallel wide sidefaces each having a planar portion and a ribbed and grooved portionhaving alternating ribs and grooves extending transversely across saidside faces, each of said ribs and grooves having portions out oflongitudinal alignment with each other and said tiles having narrow sidefaces extending perpendicularly to said wide side faces and each offsetmidway across the same to provide a protruding narrow side face portionand a receding narrow side face portion, the protruding portion of eachof said narrow faces being opposite the receding portion of the othernarrow face, each of said portions of said narrow faces having a planarportion and a grooved and ribbed portion, each of said narrow faceshaving an attaching recess therein and a flat faced portion extendingfrom said recess to the outer end of said tile at an oblique angle tosaid protruding and receding portions of said narrow faces.

10. A refractory tile having inner and outer ends parallel wide sidefaces each having a planar portion and a ribbed and grooved portionhaving alternating ribs and grooves extending continuously transverselyacross said side faces in parallelism, each of said ribs and grooveshaving parallel portions out of longitudinal alignment with each otherand oppositely inclined portions connecting said parallel portions andsaid tile having narrow side faces extending perpendicularly to saidwide side faces and each offset midway across the same to provide aprotruding portion and a receding portion, the protruding portion ofeach of said narrow faces being opposite the receding portion of theother narrow face, each of said portions of said narrow faces having aplanar portion and a grooved and ribbed portion, each of said end faceshaving an attaching recess therein and a flat faced portion extendingfrom said recess to the outer end of said tile at an oblique angle tosaid protruding and receding portions of said narrow faces.

11. A refractory tile having parallel wide side faces each having aplanar portion and a ribbed and grooved portion having alternating ribsand grooves extending continuously transversely across said side facesin parallelisrn, each of said ribs and grooves having end portions intransverse alignment with each other, a midportion extending parallel tosaid end portions out of alignment with said end portions and inclinedportions connecting said mid-portions with said end portions and saidtile having narrow side faces extending perpendicularly to said wideside faces and each ofiset midway across the same to provide aprotruding portion and a receding portion, the protruding portion ofeach of said narrow faces being opposite the receding portion of theother narrow face, each of said portions of said narrow faces having aplanar portion and a grooved and ribbed portion.

References Cited in the file of this patent UNITED STATES PATENTS1,529,242 Downey Mar. 10, 1925 1,723,092 Stowe Aug. 6, 1929 2,140,185Hosbein Dec. 13, 1938

